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we need to preview videos with overlayed so-called "safe areas" according to this EBU document: SAFE AREAS FOR 16:9 TELEVISION PRODUCTION.

Here's the scheme for 1080p resolution: 1080p Safe Areas

Those consist of three different "zones", each with the same percentage size-to-the-edge of the video frame for any resolution:

  • Action Safe Area (GREEN box): 3.5%
  • Graphics Safe Area (RED box): 5%
  • 4:3 Safe Area (GREY box): 16.25%

It should be easily achieveable using the drawbox command, but how can be dynamically adapted to any video resolution?

F.O.R.A.R.T.
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1 Answers1

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Here we go, (driven) ChatGPT did it:

ffplay -vf "drawgrid=x=(iw/2):(ih/2):t=3:color=yellow@0.5, drawbox=x=(iw-iw*0.95)/2:y=(ih-ih*0.95)/2:w=iw*0.95:h=ih*0.95:color=red@1, drawbox=x=(iw-iw*0.965)/2:y=(ih-ih*0.965)/2:w=iw*0.965:h=ih*0.965:color=green@1" filename.ext
FORART npo
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  • As it’s currently written, your answer is unclear. Please [edit] to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Jun 26 '23 at 12:55